Pipe coupling



May 15, 1945. v c. R. JEFFREYS PIPE COUPLING Filed July 9, 194:5

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IN VEN TOR.

had:

ORNEY.

s ArEs' PATE T" PIPE COUPLING v Charles R. Jefireys, McKeesport, Pa. Originalapplication December 9, 1942, Serial N6.

Divided'and this application July 9,

7 ms, Serial No. 494,090 I 3Claiips. (chess-145)"- This invention relates to pipe couplings for fastening lengths of pipe tosethen. When these coupledlensths or pipe are used as structural members or as extensions iormanipulating.

tools from a remote position, it is necessary to reinforce the'ioints to obtain the required rigidity. The coupling is utilized in th extension". shown in my copen application, Serial No.

468,401, filed December 9, 1942, of which this application is a division.

It is an obiectoi this invention to provide a coupling which is reinforced to. obtain a rigid Referring more particularly to the drawin the reference numeral 2 indicates pipes whichare to be coupled together, each pipe having a pipe thread 4 on the end thereof. Adjacent the pipe thread, the pipe has a raised portion I having a straisht thread 8 thereon; A sleeve l having a hexhead I! has pipe threads on 'eachend ior receiving the threads 4 01 pipes '2.

The sleeve In has a tapered portion It on each end for cooperation with a corresponding tapered portion I! .on a nut 20. Alter the sleeve it has been connectedto the two sections of. pipe 2, the reintorcing nuts 20 are threaded on the threads 8, the tapered'portions l8 and I8 engaging to obtain a risid reini'orced connection." I

cou-' portion for cooperating with the tapered portion Flame 2 shows how a handle may be attached toan end oi the pipe by means of the" reiniorced connection. A handle 22 ,having a tapered portion 24 similar to thatot the tapered portion Ilotthesleev il.isthreadedonthethreads4 atthecndot I 2. Thenuttlistbenthreaded 6Q sleeve.

on the threads 8 and the connection is reinforced by means of the wedging action of the tapered sections I8 and 24. I

While two adaptationsqf the invention have been described, it will be seen that other modifications and adaptations may be made without depa l'timng from the scope of the attached claims.

I c l 1. A coupling for connecting pip sections, the

ends of each section having a standard pipe thread thereon and a straight thread on a raised portion adjacent said pipe thread, comprising a sleeve having" threads for receiving said pipe threads and a tapered exterior portion on each end thereof, and a nut threaded'on each of said straight threads, each ofsaid nuts having an internally tapered portion ior cooperating with the tapered portion of said sleeve.

2. A coupling for connecting the ends of cylindrical members, each member, having a threadon the end thereof and a thread of greater diameter adjacent said first named thread, comprising a sleeve having a tapered exterior portion on each end thereof, said sleeve being threaded to' receive the first named threads-and a nut threaded on 'each 01 said second named threads, eah of said nuts having an internally tapered of said sleeve.

drical member. having a thread on one end thereof, 'a. raised portion on' said member ad- .)acent the thread, a thread on the raised portion adjacent the first thread,- a sleeve having a i said sleeve. being tapered exterior portion, threaded to receive said first thread, and a' reinforcing nut threaded on said second thread, said nut having an internally tapered portion tor cooperating with the. tapeped portion of said r CHARLESR.

3. A reinforced connection comprising acylin- 

